Hey everyone!
I am new to working with modems and RS485, but i hope my question will be clear!
I connected the RUT955 through RS485 with a EtherCAT Terminal (EL6021 from Beckhoff) to a PLC. Now I try to send an SMS via the modem. If I try to send an SMS in the WebUI it works fine, but i can't get it work by sending AT commands.
I got already support from Beckhoff, so I am pretty sure this part is correct, thats why I guess I have some wrong settings on the modem... Also the I/O of the terminal shows that some informations are send and recieved, but in the Log of the modem there are no messages.
Could somenone help me and provide me some further informations on what to pay attention when I connect the modem with RS485? Which settings are needed?
Thanks!